CVE-2026-68883

high

Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.

Vendor / product: Microsoft — sql server 2017

Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.

CVSS

8.5

8.5 (CVSS v3.1)

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Severity source: NVD CVSS v3.1 (secure@microsoft.com)

Timeline (UTC)

Published: 2026-10-13 21:17

Modified: 2026-11-02 18:48

NVD status: Analyzed

Last synced 1 day ago

Verified against the source API 2026-11-03 07:34 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

microsoft / sql_server_2017 ≥14.0.1000.169 <14.0.2140.2, ≥14.0.3006.16 <14.0.3560.2

microsoft / sql_server_2019 ≥15.0.2000.5 <15.0.2200.2, ≥15.0.4003.23 <15.0.4500.2

microsoft / sql_server_2022 ≥16.0.1000.6 <16.0.1210.3, ≥16.0.4003.1 <16.0.4305.5

microsoft / sql_server_2025 ≥17.0.1000.7 <17.0.1145.4, ≥17.0.4006.2 <17.0.5015.4

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

NVD CVE API 2.0 — fetched 2026-11-03 07:34 UTC · record ↗